Disk harrow.



No. 687,944. Patented Dee. 3, |90|.

l J c TALBOT A, msx HAnnuw.

4ZSheets--Shee I.

@No Model.)

wuewrofc www@ l uunumli IMIQIHI" Patented Dec. 3, I90I. J. C. TALBUT.

DISK HABHOW.

(Application led Sept 25, 1901..

2 Sheets-#Sheet 2.

(No Model.)

Suma/wo# @fw/6555022 Wmme UNITED STATES PATENT JOSEPH C. TALBOT, OFWALLA WALLA, WASHINGTON.

. DISK HARROW.

SPECIFICATION forming part of Letters Patent N o. 687,944, datedDecember 3, 11901. Application tiled September 25,1901. Serial No.76,478. (No model.)

To a/ZZ whom it may concern:

Be it known that I, JOSEPH O. TALBOT, a citizen ofthe United States,residing at Walla Walla, in the county of Walla Walla and State ofWashington, have invented certain new and useful Improvements in DiskHarrows; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to the annexeddrawings, making apart of this specification, and to the letters ofreference marked thereon.

The present invention has relation to that class of disk harrowsprovided with a double row or two sections of pulverizing or cuttingdisks; and the object thereof is to improve such barrow in the severaldetails of construction, whereby greater strength and durability aresecured and a more perfect operation of the barrow-sections incultivating the ground and catching all weeds that may bc missed by thefirst set or section of disks, thus thoroughly cutting and pulverizingthe ground and destroying all weeds.

The invention consistsin a disk harrow constructed substantially asshown in the drawings and hereinafter described and claimed.

Figure 1 of the drawings is atop plan View of a harrow construct-ed inaccordance with my invention, the dotted lines showing the angle towhich the disk -sections may be brought; Fig. 2, a side elevationthereof, partly in section; Fig. 3, a detail perspective view of two ofthe disks, on an enlarged scale, with a portion of the barrow-frame andits connections; Fig. 4, a detail sectional view thereof.

In the accompanying drawings, `A B represent two parallel bars, and O Dthe two crossbars connected thereto, the cross-bar O connecting the rearends of the parallel bars, the cross-bars being connected by thesupportingbrace E, to which the spring a is connected, that supports theusual drivers seat F. The parallel and cross bars comprise the frame ofthe barrow; but any suitable frame may be substituted for that shown,and any suitable drivers seat and means for connecting it to theharroW-frame may be used, without departing from the principle of myinvention. At the under side of the parallel bars A B are metal bracesG,which braces are connected by suitable fastenings to the ends of thebars and to the underside thereof. These braces extend along the entirelength of the parallel bars and are of such length as to extend somedistance beyond the front ends of the bars and are bent down to formhangers b, to which is secured the draft-bar H. Similar hangers c aresecured to the upper side and end of the parallel bars, and betweenthese hangers the draftbar is held and secured by bolts or othersuitable fastenings, as shown in Fig. 2 of the drawings.

A draft-tongue of any preferred construction, as shownat I, is suitablyconnected to the draft-bar H, the form and construction of the tongueand the manner of attaching it to the draft-bar or harrow-frame beingsubject to many modifications or changes and being left entirely to thej udgmcnt of the user.

The metal braces G are not only designed as braces to strengthen theframe of the harrow, but also as guides, and thereforelshall term thesame guide-braces, as the double function of a brace and guide issecured. In order to serve the function of a guide, the brace is benttoextend down some distance to present a space between it and the underside of the bars A B, as shown in Fig. 2 of the drawings. Theseguide-braces G receive the ends of disk-beams J K, which are somewhatlonger than the width of the barrow-frame, so that the ends of thedisk-beam will extend beyond the sides of the barrow-frame. the ends ofthe beams J K are connected suitable brackets L, which terminate attheir lower ends in socket-bearin gs d to receive the projecting ends eof the axles f. Upright tubes g extend down through the disk-beams J Kand engage the socket-bearings d, said tubes receiving the lubricantwhich is fed to the projecting ends e of the axle, the tubes beingclosed at their upper ends by removable stoppersb, as shown in Fig. 4 ofthe drawings.

The barrow-disks M are shown as concavoconvex in form; but the disks maybe of any suitable shape and construction found best adapted to thepurpose. The disks are held on the a-xlef the required distance apart bymeans of the tubular blocks t' and the tightening-nut j, which nutengages the screwthreads upon the axle.

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Any number of harrow-disks may be used and the distance between themincreased or diminished by the employment of tubular blocks of differentlengths, the blocks being readily removable from the axle and replacedby others of the required length.

The disk-beams J K are pivotallyconnected to one ofthe bars of theframe, preferably the bar A, as shown, although the disk-beams may bepivoted to any portion of the harrowframe, depending entirely upon thekind of frame used.

The disk-beams J K are pivoted to the frame by means of removablepivot-pins 7c, which extend through the bar A, the diskbeams, and theguide-brace G, as shown in Fig. 4 of the drawings. The pivot-pins k haveheads Z at their upper ends, which are seated in mortises m in theparallel bar A of the harrow-frame, and to hold said pins in place andprevent them from accidentally disengaging themselves there is provideda pivoted guard-plate n. This guard-plate extends over the head ot thepin and holds it down in place, and when 'it is necessary for any reasonto remove the pin the guard-plate may be swung-around from over the headof the pin, which will admit of the pin being withdrawn. The pivoting ofthe disk-beams to the frame of the harrow, as herein described, admitsof the two sets of harrowdisks being brought parallel to each other, asshown in full lines of Fig. l of the drawings, or at any desired angleto each other, as shown in dotted lines, thereby forcing the disks intothe ground different depths, and the greater the angle from a parallelthe deeper the disks will enter the ground. Any suitable means may beemployed for changing the angle of the beams with relation to each otherand holding them in their adjusted position, and I will show one of manydevices that may be used to attain this end.

A suitable hand-lever is pivoted to the bar B of the harrow-frame, asshown at N, said lever having a double curve at its lower end, and aboveand below its pivotal connection are rods 0 p, respectively, as shown inFig. 2

of the drawings. These rods are connected to the lever and to the endsof the disk-beams J K in any suitable manner, and a notched arch O issecured to the harrow-frame, and a lever-rod r, with pawl, is pivotallyconnected to the hand-lever N through the medium of the hand-grasp s. Inmoving the hand-lever in either direction and releasing the handgrasp ofthe lever rod to allow the pawl thereon to engage the notch of the archthe disk-beams will be held at any position adjusted, either parallelwith each other or at an angle, as found necessary.

In order to reinforce the guide-braces G, at or near their center,suitable stay-blocks may be used, as shown at t in Figs. 2 and 3of thedrawings, or any means may be employed for this purpose.

It is evident that many changes or modifications may be made in theseveral details of construction without in any manner changing thecharacter of the invention, and any such changes may be resorted toaswould come within ordinary mechanical judgment without affecting theessential features of the invention.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is

l. A disk harrow comprising a suitable frame, beams pivoted at one endto the frame, suitable disks connecting with the beams, and suitableguide-brace extending the length of the frame and connected to the underside thereof, the ends of the beams extending between the frame andguide-braces, and suitable means for operating the beams to change theangle of the disks, substantially as and for the purpose set forth.

2. A disk harrow comprising a suitable frame, pivoted beams and disksconnecting therewith, guide braces connected to the frame by removablepivot-pins for pivotally connecting the beams to the frame, and pivotedguard-plates to extend over the head of the pins to hold them inengagement with the frame, beam and guide-brace, substantially as andfor the purpose specified.

3. A disk harrow comprising a suitable frame, beams pivotally connectedat one end to the frame, brackets depending from the ends of the beamsand terminating in inwardly-extendin g socket-bearings, axles havingprojecting ends engaging the sockets in the bearings, disks upon theaxles, removable blocks upon the axles and interposed between the disks,tightening-nuts engaging the screwethreads up'on the axle, andguidebraces connected to the frame, and means for operating thedisk-beams, substantially as and for the purpose described.

In testimony that I claim the above I have hereunto subscribed my nameinthe presence of two witnesses.

JOSEPH C. TALBOT.

Witnesses:

J. W. LANGDON, CHAS. S. BUFFUM.

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